AC Power Monitoring Panel
This one I like. It measures many alternating current values and a sore thumb from pushing buttons isn't necessary http://www.banggood.com/Multifunction-AC100A-Digital-LED-Energy-Meter-Powe...
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This is one Ebay-ish looking hub. Price is nice though.
No audio alarm. Auto-translation of the only review:
Cons: the appliance is designed for large currents. More suitable for garage or workshop. It would be nice to restrict to 25A. 4 times Increased accuracy would be on small "revs". Theoretically, nothing complicated. It is enough to increase the number of revolutions in the transformer current four times and change the calibration factors (one option). But who will do it?
Pros: a wide range of operating voltages (80-260v). -High precision device. -Done neatly and soundly. -The appliance can be used as electrical energy meter. -After a power failure, the appliance saves in memory the last number of energy. -Possible also to use as a remote monitor power consumption. More detail here: http://mysku.ru/blog/china-stores/38717.html https://youtu.be/HyG3xIVHvCs
No audio alarm. Auto-translation of the only review:
Cons: the appliance is designed for large currents. More suitable for garage or workshop. It would be nice to restrict to 25A. 4 times Increased accuracy would be on small "revs". Theoretically, nothing complicated. It is enough to increase the number of revolutions in the transformer current four times and change the calibration factors (one option). But who will do it?
Pros: a wide range of operating voltages (80-260v). -High precision device. -Done neatly and soundly. -The appliance can be used as electrical energy meter. -After a power failure, the appliance saves in memory the last number of energy. -Possible also to use as a remote monitor power consumption. More detail here: http://mysku.ru/blog/china-stores/38717.html https://youtu.be/HyG3xIVHvCs
